Question

обчисліть -16/25+4/27+21/25+(-13/27​

Answer 1

Ответ:

16/25+4/27+21/25-13/27

-2/15

Answer 2

$- \frac{16}{25} + \frac{4}{27} + \frac{21}{25} + ( - \frac{13}{27} ) = ( - \frac{16}{25} + \frac{21}{25} ) + ( \frac{4}{27} + ( - \frac{13}{27} ) = ( \frac{5}{25} ) + ( - \frac{9}{27} ) = \frac{1}{5} - \frac{1}{3} = \frac{3 - 5}{15} = - \frac{2}{15}$